Study on Trifluoromethylation of CarbonーCarbon Unsaturated Bonds by Photoredox CatalysisStudy on Trifluoromethylation of CarbonーCarbon Unsaturated Bonds by Photoredox CatalysisStudy on Trifluoromethylation of CarbonーCarbon Unsaturated Bonds by Photoredox Catalysisフォトレドックス触媒による炭素ー炭素不飽和結合のトリフルオロメチル化反応に関する研究